<?php
namespace App\GraphQL\Queries\PriceSpecification;

use App\Models\PriceSpecification;
use GraphQL\Type\Definition\ResolveInfo;
use Nuwave\Lighthouse\Support\Contracts\GraphQLContext;

class Query
{

    /**
     * Return a value for the field.
     *
     * @param null $rootValue
     *            Usually contains the result returned from the parent field. In this case, it is always `null`.
     * @param mixed[] $args
     *            The arguments that were passed into the field.
     * @param \Nuwave\Lighthouse\Support\Contracts\GraphQLContext $context
     *            Arbitrary data that is shared between all fields of a single query.
     * @param \GraphQL\Type\Definition\ResolveInfo $resolveInfo
     *            Information about the query itself, such as the execution state, the field name, path to the field from the root, and more.
     * @return mixed
     */
    public function __invoke($rootValue, array $args, GraphQLContext $context, ResolveInfo $resolveInfo)
    {
        $priceSpecification = PriceSpecification::find($args['id']);
        if (! $priceSpecification) {
            throw new \Exception('价格设置不存在!');
        }
        return $priceSpecification;
    }
}
